Here are some links to useful and/or interesting physics websites:

Disclaimer: I am not responsible for content on other sites. I believe these sites to be free of inappropriate materials, but I cannot guarantee this because content is always changing.

Learnerator, for AP Physics and test prep

Khan Academy

PhET, from the University of Colorado-Boulder

The Physics Classroom

Dot Physics, a blog at Wired.com

PhysLink.com

MIT OpenCourseWare

Physics Central, from the American Physical Society

Physics Research Spotlight, from the American Physical Society

A+ Physics

How Stuff Works

High School Physics Help, from Finding Dulcinea

Sports Science, from John Brenkus at ESPN

Physics and Math Help, from Physics Forum